| ICD-10 Code | Description |
| S20.321A | Blister (nonthermal) of right front wall of thorax, initial encounter |
| S20.321D | Blister (nonthermal) of right front wall of thorax, subsequent encounter |
| S20.321S | Blister (nonthermal) of right front wall of thorax, sequela |
| S20.322A | Blister (nonthermal) of left front wall of thorax, initial encounter |
| S20.322D | Blister (nonthermal) of left front wall of thorax, subsequent encounter |
| S20.322S | Blister (nonthermal) of left front wall of thorax, sequela |
| S20.323A | Blister (nonthermal) of bilateral front wall of thorax, initial encounter |
| S20.323D | Blister (nonthermal) of bilateral front wall of thorax, subsequent encounter |
| S20.323S | Blister (nonthermal) of bilateral front wall of thorax, sequela |
| S20.324A | Blister (nonthermal) of middle front wall of thorax, initial encounter |
| S20.324D | Blister (nonthermal) of middle front wall of thorax, subsequent encounter |
| S20.324S | Blister (nonthermal) of middle front wall of thorax, sequela |
| S20.329A | Blister (nonthermal) of unspecified front wall of thorax, initial encounter |
| S20.329D | Blister (nonthermal) of unspecified front wall of thorax, subsequent encounter |
| S20.329S | Blister (nonthermal) of unspecified front wall of thorax, sequela |
